[G Tablet General] xdadev69:
Stock 3991 TNT update installed and stable

After hearing some of the positive aspects of this Tap N Tap stock version from some of the other posters here, I had to play around with it to see if I could get it to install smoothly and be stable. I have gotten this to work, started over again, and gotten it to work again and it seems to be very stable. Here is what you need to do.

First you need to use nvflash to complete restore your tablet to bekit's original stock rom. http://xdaforums.com/showthread.php?t=861950

Once your tablet reboots from being restored to the original stock and you are at the main dashboard with WIFI turned on and setup, you will should be prompted by the Tap N Tap auto update to install the latest update, which is the 3588 version. I found that you must Install this update to be successful with the installation of 3991. I tried more than once to go from bekit's original stock directly to the 3991 version and it would fail at boot and bork the device. There must be some bug fixes or something in the 3588 version that is needed by 3991 to get it to boot and run smoothly.

Once the auto update to 3588 is finished installing and you are back at the main dashboard. Go to Settings -> Storage ->Tablet Storage and select format the user content storage. After the format finishes go to Security in the settings and do a Factory Data Reset. This will give you a clean install before going to 3991 and will help with stability.

You will be presented with the 4 step setup once it reboots from doing the Factory Data Reset. Get your tablet setup and then attach it to your computer to copy over the 3991 update files. You will need to rename the 3991 zip file you downloaded from this thread to update.zip and copy it to the root of your internal sdcard along with a copy of the recovery folder from TNT lite or one of the other custom roms.

**You must use the stock recovery to flash this update** 3991 does not like Clockworkmod and will bork your device if you have it installed. Again, I have found out more than once that I was not able to boot the tablet after running this update with clockworkmod installed!!

Once you have copied over the update.zip and recovery folder to the root of your sdcard, power off the tablet and enter recovery mode by holding the power button and volume up like you do with any other rom. The update will run automatically via the stock recovery. Once the update is finished, your screen may hang and just go black with a faint background lighting behind it. This apparently is OK, as this happend to me more than once installing the 3991 update using these steps. Let it sit at the black screen for 20 seconds or so, then hold the power button in until the tablet shuts off. Once you power the tablet back on, it should boot up without problems. The intial boot will take a bit longer than subsequent boots, but as long as it gets past the first two boot screens to the Tap N Tap peacock, it should boot just fine.

I am now running this stock version and it has been fully stable for me and I am getting Quadrant scores between 2000 and 2100. I must say, this update is pretty nice and a huge move in the right direction by Viewsonic and Tap N Tap. This isn't even an officially released update by Viewsonic and it is running pretty smoothly and stable for me.

Just a note. There still is no Market with this update, so you will want to have all your favorite APKs downloaded to your PC and ready to side load. For me, not having the Market is not a big deal since I already have copies of all the APKs I want to install on my tablet.

For those of you that want to sync with an Exchange server, you will be pleased with the strides Viewsonic is making. It will now sync your calendar and contacts along with email with the stock applications, however the calendar and contacts are only read only. You cannot add or edit any contacts or calendar appointments. Hopefully that will be fixed with by the time the officially release the update over the air. So far the email app has been syncing with Exchange server and running very well for me. Might just be my personal taste, but I like the wood look of the stock TNT email application over the stock android email app.

Some issues I have found:

I had created a folder called APPS on my sdcard with all my APKs I copied over from my PC and had no problems installing all of them including Kindle (No cannot locate internet connection issue when trying to register wit Kindle). I did however find that when I rebooted the tablet, the APPS folder I had created along with all my APK files were deleted from the sdcard and Angry Birds Seasons was no longer installed on the tablet. All my other apps were still installed and ran just fine, but Angry Birds Seasons was removed on reboot. I am guessing since Angry Birds 1.4.2 is installed by default as part of this stock rom, it must not like having installed Angry Birds Seasons installed along with it and will remove it on reboot. Make sure you have backups of anything you download or copy to your sdcard, as you might find it gone when you reboot.

Some issues updated: 3/7/2011: I went through the process one more time, this time I did an additional Factory Data Reset after running the 3991 update and it solved the disappearing apk issue and the Angry Birds issue. Angry Birds was not installed by default after doing the Factory Data Reset. I was able to side load and install both versions without issue.

I did find a new issue. When you try to change the wallpaper you get a force close. It will let you change to a live wallpaper without issue and change to different live wallpapers, but the regular wallpaper gives you a force close. If you do switch to a live wallpaper, you cannot go back to regular.

I did not have the Wifi issue that some others had when trying to install this update using these steps.

Overall I am pretty impressed with all the improvements Viewsonic and Tap N Tap have made with this updated version, probably due in large part to the enhancements and fixes they borrowed from this website. :D

Good luck!!